If you're new to Duik16, you may read the list of new features already implemented since Duik15. This list is going to evolve in the next days/weeks as we are currently implementing a lot of new tools.

With the new structures in Duik 16 I had a unique opportunity to make it more versatile than ever, so I took it.

It can now rig all kinds of walking animals: plantigrades (humans, bears and rabbits), digitigrades (cats and dogs) and ungulates (cattle, sheeps..).
Versatility...

The Auto-rig now handles 20 different limb parts for these 3 kinds of walking animals.

This means there are 31 possible different combinations just for the human arm, plus 10 for other kinds of animals.

Out of curiosity, I read this page to calculate that there are 10.455 possible different combinations to create any animal with two identical arms and two identical legs.

But of course, your characters can have just one arm. Or three. With or without tails. Maybe 8 tails? You're free to try anything, I'm pretty confident the Autorig will handle the situation!
Yes, you can rig an octopus with just one head and 8 tails. Maybe I'll record a quick tutorial about this one